White Tabular Alumina For Foundry Ceramic
White Tabular Alumina is widely used in foundry ceramics, where it is used to manufacture high-temperature refractory materials such as crucibles, ladles, nozzles, and thermocouple protection tubes. It is also used in the production of advanced ceramics, including catalyst supports, wear-resistant components, and high-performance insulators.
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Description
White Tabular Alumina is made of pure aluminum oxide (Al2O3) and has a minimum purity of 99.5%. It is produced by sintering high-purity alumina powder at high temperatures, resulting in a crystal structure that is unique to this material.
White Tabular Alumina has a high melting point of 2040°C (3704°F) and a low thermal expansion coefficient, making it an ideal material for applications that require high-temperature resistance. It has a high compressive strength and hardness, which makes it an excellent choice for abrasion-resistant applications.
White Tabular Alumina is a free-flowing, ultra-fine powder that is easy to process and shape. It can be formed into various shapes, including tubes, rings, plates, and bricks, using a variety of processing methods, including dry pressing, isostatic pressing, and extrusion.
Specification
Chemical Formula: Al2O3
Appearance: White, ultra-fine powder
Melting Point: 2040°C (3704°F)
Density: 3.6 g/cm³
Hardness: 9 on the Mohs scale
Compressive Strength: 2600 MPa
Thermal Conductivity: 30 W/(m·K)
Thermal Expansion Coefficient: 5.6 x 10^-6 /°C
Advantages
White Tabular Alumina has several advantages over other refractory materials, including its high-purity, high-temperature resistance, and excellent mechanical properties. It has a low thermal expansion coefficient, which makes it ideal for use in applications that require dimensional stability at high temperatures. It also has excellent chemical resistance, making it resistant to acids, alkalis, and other corrosive substances.
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